Hey guys, fairly new to the scene and first time asking a question. I am having an issue with point lights leaking light above and under my walls and I can’t seem to fix the issue. I’d really like to use Lumen for my game, if possible. Here’s some information:
I’m currently using UE5 and Lumen for my lighting.
I have the walls, ceiling, and floor (which was generated using the landscape tool) all completely flush, not overlapping.
My walls are 20cm thick.
Using post processing (infinite unbound) and my auto exposure is set to manual.
Seems to be leaking from the specular highlights from lights on the other side of the room. Might be able to fix this by simply setting their specular intensity to 0 but I’m not sure why this is happening. Maybe they’re unshadowed?
Interestingly, I hopped in the game and when going from a lit location to the unlit location, my lighting changed and it actually leaked more than when I was viewing it in the editor or when I’d do “play from here” in the dark area.
For those that found this isn’t their solution. I suggest adding a visible sided barrier to block the light. When using Planes, the non-visible side does not interact with the light. So Light passes right through. UE only responds to the visible draw sides.
